US3483464A
Expired / Lapsed
US
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Voltage regulator systems employing a multifunctional circuit comprising a field effect transistor constant current source
Assignee: AT&T Inc
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Filing: 1967-08-10
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Granted: 1969-12-09
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Expires: 1987-08-10
Abstract
No abstract record available.
Inventors
- 👤 Milton L Embree
- 👤 Billy H Hamilton
- 👤 Clair G Metzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:17
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/575; H; H10; H10D; H10D84/00; H10D84/01; H10D84/0112; H10D84/02; H10D84/03; H10D84/038; Y; Y10; Y10S; Y10S148/00; Y10S148/037; Y10S148/151
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |